Lenze SimpleServo 94, User Manual

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IMS94S-mv1
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6.3.4 Peak current limit
Peak current sets Motor RMS phase current that is allowed for up to 2 Seconds.
After this two second limit, the current limit will be reduced to the value set in the
Current Limit parameter. When the motor current drops below nominal current for
two seconds, the drive will automatically enable the peak current level again. This
technique allows for high peak torque on demanding fast moves and fast start/stop
operations with high regulation bandwidth.
6.3.5 Analog input scale (Current scale)
This parameter sets analog input sensitivity for current reference used when drive
operates in Torque mode. Units for this parameter are A/Volt. To calculate value use
following formula:
Iscale = Imax / Vin max
Imax maximum desired output current in A, (motor phase current RMS)
Vin max max voltage fed to analog input at Imax
Example: Imax = 5A (phase RMS)
Vin max = 10V
Iscale = Imax / Vin max = 5A / 10V = 0.5 A / Volt -> value to enter.
6.3.6 Analog input scale (Velocity scale)
This parameter sets analog input sensitivity for velocity reference used when drive
operates in Velocity mode. Units for this parameter are RPM/Volt. To calculate value
use following formula:
Vscale = VelocityMax / Vin max
Velocitymax maximum desired velocity in RPM
Vin max
max voltage fed to analog input at Velocitymax
Example:
Velocitymax = 2000 RPM
Vin max = 10V
Vscale = Velocitymax / Vin max
= 2000 / 10V
= 200 RPM / Volt ( value to enter )
6.3.7 ACCEL/DECEL Limits (Velocity mode only)
The ACCEL setting determines the time the motor takes to ramp to a higher speed.
The DECEL setting determines the time the motor takes to ramp to a lower speed. If
the ENABLE ACCEL\DECEL LIMITS is set to DISABLE, the drive will automatically
accelerate and decelerate at maximum acceleration limited only by current limit
established by the PEAK CURRENT LIMIT and CURRENT LIMIT settings.
6.3.8 Reference (Velocity mode only)
The REFERENCE setting selects the reference signal being used.
Select Internal only when you using drive’s built-in digital signal generator (Run
Panel) for tuning purposes. Select External for normal operations.
6.3.9 Step input type
This parameter set the type of input for position reference drive expects to see. Signal
can be step and direction (S/D) type or quadrature pulse-train (Master Encoder). Refer
to 5.2.1 for details on these inputs.